Remote Login in to another Terminal

hi all ,

i need the command for remote login in to another terminal, came accross by using "tty" command. please suggest and help me out in this.

Regrds
Sridhar.

Sorry, its not clear.

Did you mean remote login to terminal or host?
I assume you meant host, based on the availability of the daemons - telnetd, sshd, use ssh or telnet to login to that host.